<!DOCTYPE html>
<html lang="en">
<head>
    <style>
        span{
            width: 100px;
            height: 100px;
            border: 1px solid #000;
        }
        input{
            border: 2px solid #000;
        }
    </style>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div>
        我是div
    </div>
    <span>我是span</span>
    <p>我是p</p>
    <input type="text">
</body>
</html>